A Comparison of the Notations Used in the Shlaer/Mellor Method and in TCM
Roelf J. Wieringa, Gunter Saake · University of Twente Research Information · 1995
This report compares two notation systems for requirements modeling, the notations used in the Shlaer-Mellor method for object-oriejted analysis and the notations used in TCM (Toolkit for Conceptual Modeling). Both notations systems are semi-formal, but in addition, TCM contains a formal part that allows writing a specification in LCM (Language for Conceptual Modeling), a language based on order-sorted dynamic logic. The formal and semi-formal parts of a TCM specification supplement each other and each can be used without using the other. Because the semi-formal and formal notations in TCM are precisely related, the semi-formal notations have unambiguous definitions and the formal notations have simple and clear digaram representations.